VDB-151823 · CVE-2019-20485 · Nessus 209571

libvirt up to 5.x Monitor Job qemu/qemu_driver.c input validation

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4.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in libvirt up to 5.x. It has been rated as problematic. Affected by this issue is some unknown functionality of the file qemu/qemu_driver.c of the component Monitor Job Handler. The manipulation leads to input validation. This vulnerability is listed as CVE-2019-20485. The attack must be carried out from within the local network. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in libvirt up to 5.x (Virtualization Software). This issue affects an unknown function of the file qemu/qemu_driver.c of the component Monitor Job Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).

The weakness was presented 03/19/2020 (Website). It is possible to read the advisory at libvirt.org. The identification of this vulnerability is CVE-2019-20485 since 03/01/2020. The exploitation is known to be easy. The attack needs to approached within the local network. The successful exploitation requires a simple authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.0.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (209571). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Virtualization Software

Name

libvirt

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.7
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libvirt 6.0.0
Patch: a663a860819287e041c3de672aad1d8543098ecc

Timelineinfo

03/01/2020 🔍
03/19/2020 +18 days 🔍
03/19/2020 +0 days 🔍
10/25/2024 +1681 days 🔍

Sourcesinfo

Advisory: FEDORA-2020-5cd83efda7
Status: Confirmed

CVE: CVE-2019-20485 (🔍)
GCVE (CVE): GCVE-0-2019-20485
GCVE (VulDB): GCVE-100-151823

Entryinfo

Created: 03/19/2020 09:01
Updated: 10/25/2024 03:02
Changes: 03/19/2020 09:01 (39), 03/19/2020 09:06 (18), 04/17/2024 14:31 (20), 10/25/2024 03:02 (5)
Complete: 🔍
Cache ID: 216::103